New Arrivals/Restock

Fox Shox Standard Spring, 1.385" ID, 71mm/2.8" Stroke, 400lbs

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Product details

Management number 212537624 Release Date 2026/04/06 List Price $18.50 Model Number 212537624
Category

Upgrade your mountain bike's rear suspension with the FOX Steel Rear Shock Coil Spring - a high-performance, durable component engineered for riders demanding reliability and precision. Designed specifically for Fox, Marzocchi, DVO, MRP, X-Fusion, and other brands with a compatible 1.385" inside diameter, this 400 lb. x 2.8" spring offers optimal support and smooth operation on varying terrains. Materials & Construction: Made from proprietary FOX standard steel, this coil spring is crafted for maximum strength and longevity. Its steel composition ensures robust performance under demanding riding conditions, while the ultra-durable black powder-coat finish provides excellent corrosion resistance and a sleek, professional look that resists scratches and wear. Performance & Engineering: With a spring rate of 400 lbs/in and a total spring length of 5.459 inches, this coil spring is engineered to enhance shock responsiveness and ride stability over rough terrain, technical descents, and jumps. Its precise fit and engineered design optimize damping and rebound control, contributing to a smoother, more controlled ride experience. Components & Technology: The spring features the standard FOX low-profile markings "400 x 2.80" for easy identification. Its 35.2mm (1.385") inside diameter ensures compatibility with a wide range of rear shocks, including Fox's own models. The spring's design accommodates shock stroke travel between 2.264" and 2.55", making it ideal for mountain biking applications that require reliable support and quick responsiveness. Style & Use Case: Designed for mountain biking enthusiasts and aggressive riders, this coil spring is perfect for upgrading or customizing your rear suspension setup. Whether tackling enduro, trail riding, or downhill, the FOX Steel Coil Spring delivers enhanced performance with a sleek black finish that complements any bike aesthetic. Innovative & Differentiating Features: - Proprietary FOX steel guarantees durability and consis

  • Optimized for durability and performance, this FOX Steel Rear Shock Coil Spring features a steel construction with a proprietary Fox standard alloy for enhanced strength and longevity.
  • Designed to fit Fox coil shocks as well as Marzocchi, DVO, MRP, and X-Fusion systems thanks to a precise 1.385" inside diameter, ensuring compatibility across multiple brands and models.
  • Engineered with a 400 lb. spring rate and 2.8" spring travel, this spring delivers reliable support and damping control for aggressive trail riding, enduro, and downhill riding styles.
  • The ultra-durable black powder-coat finish provides excellent corrosion resistance and a sleek appearance, maintaining aesthetic appeal and functional integrity over extended use.
  • Featuring clear spring markings with weight capacity and travel information, along with Fox vendor part numbers for easy identification and installation, this spring is an essential upgrade for riders seeking optimized suspension performance.
UPC 821973501710
Brand Name FOX Factory
Style Name Rear Shock Spring
Unit Count 1.0 Count
Item Weight 0.91 Pounds
Manufacturer FOX
Model Number 803-04-144
Material Type Steel
Included Components Rear Shock Spring
Manufacturer Part Number 803-04-144
Compatible with Vehicle Type Bicycle
Manufacturer Warranty Description Limited Warranty

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